Asriel glances between Chara and Mettaton for a moment, wondering if he should try to say something. As much as Asriel wants for Mettaton and Chara to get along... saying something would probably hurt more than help. Mettaton said there was an improvement last time, right?

The question distracts him, and Asriel perks right back up again.

"Yeah, I think we're doing all right!" Asriel holds his tongue against making a comment about how this place is an improvement over everywhere else they've been, but it's a nice picnic. He doesn't need to interject with his own negativity. If this place doesn't last... he wants to enjoy this moment right now. Right here under a brightly lit sky with everyone he cares about.

"We have a house now - it's got a pool! A big one!"